89 lines
3.3 KiB
TypeScript
89 lines
3.3 KiB
TypeScript
import { HttpClient } from '@angular/common/http';
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import { Component, HostListener, OnInit, ViewChild } from '@angular/core';
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import { MatSort, MatSortable, MatSortModule } from '@angular/material/sort';
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import { MatTableDataSource, MatTableModule } from '@angular/material/table';
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import { Layer } from 'src/app/models/layer.model';
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import { MatInputModule } from '@angular/material/input';
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import { MatFormFieldModule } from '@angular/material/form-field';
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import { RouterLink } from '@angular/router';
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import { MatButtonModule } from '@angular/material/button';
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import { MatGridListModule } from '@angular/material/grid-list';
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import { MatSelectModule } from '@angular/material/select';
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import { FormsModule } from '@angular/forms';
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import { MatChipInputEvent, MatChipsModule} from '@angular/material/chips';
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import { MatIconModule } from '@angular/material/icon';
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import {COMMA, ENTER, TAB} from '@angular/cdk/keycodes';
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import { NgFor } from '@angular/common';
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@Component({
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selector: 'app-layers-list',
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templateUrl: './layers-list.component.html',
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styleUrls: ['./layers-list.component.scss'],
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standalone: true,
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imports: [MatGridListModule, MatButtonModule, RouterLink, MatFormFieldModule,
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MatInputModule, MatTableModule, MatSortModule, MatSelectModule, FormsModule,
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MatChipsModule, MatIconModule, NgFor]
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})
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export class LayersListComponent implements OnInit {
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displayedColumns = ['number', 'name', 'source'];
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dataSource!: MatTableDataSource<Layer>;
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@ViewChild(MatSort) sort!: MatSort;
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start: number = 0;
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limit: number = 50;
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end: number = this.limit + this.start;
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loadingInProgress: boolean = false;
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type: string = "";
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codes: string[] = [];
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constructor(
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private _http: HttpClient,
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) { }
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@HostListener('document:scroll', ['$event'])
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public async onScroll(event: any) {
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if (event.target.offsetHeight + event.target.scrollTop >= event.target.scrollHeight - 1 && !this.loadingInProgress) {
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this.loadingInProgress = true;
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let data: Layer[] = await Layer.getList(this._http, this.start, this.limit, this.codes);
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this.dataSource.data = this.dataSource.data.concat(data);
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this.start = this.end;
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this.end = this.limit + this.start;
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setTimeout(() => {
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this.loadingInProgress = false;
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}, 500);
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}
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}
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async ngOnInit() {
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this.dataSource = new MatTableDataSource(await Layer.getList(this._http, this.start, this.limit, this.codes));
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this.dataSource.sort = this.sort;
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this.dataSource.sort.sort({ id: 'number', start: 'desc' } as MatSortable);
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this.start = this.end;
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this.end = this.limit + this.start;
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}
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trackByUid(index : number, item : Layer) {
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return item.id;
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}
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async removeCode(code: string) {
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const index = this.codes.indexOf(code);
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if (index >= 0) {
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this.start = 0;
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this.end = this.limit + this.start;
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this.codes.splice(index, 1);
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this.dataSource.data = await Layer.getList(this._http, this.start, this.limit, this.codes);
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}
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}
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async addCode(event: any) {
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const value = (event.target.value || '').trim();
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if (value) {
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this.start = 0;
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this.end = this.limit + this.start;
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this.codes.push(value);
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this.dataSource.data = await Layer.getList(this._http, this.start, this.limit, this.codes);
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}
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event.target.value = '';
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}
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}
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